Blow-out device for boiler-flues.



D. BREWS.

BLOW-our DEVICE FOR BolLER FLUES.

1 1 62a APPLICATION FILED APR. 20, 19|4. 25,1910.

2 SHEETS-SHEET l- Para? 0 O O O [hoc/ifm, Qa-177m UWE/wie s.

D. BREWS.

BLowoUT DEVICE FOR BOILER FLuEs.

APPLICATION FILED APR. 20, 1914. I a Patented July 25, 1916n 2 SHEETS-SHEET 2- En STATES PATENT OFFICE noUGLAs Banws, on CLEVELAND, onro BLOW-OUT DEVICE FOR BOILER-FLUES.

Licence.

` Specication of Letters Patent.

Application led April 20, 1.914. SerialiNo. 833,189.

To all whom t may concern:

yBe itknown that I, DOUGLAS BREWS, a citizen of the Unitedv States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Blow-Out Devices for Boiler-Fines, of which rthe follfrw-v ing is a specification.

This invention has reference to blow-out devices for steam boiler 'lues, all substantially as vshown and described and particu-A larly pointed out in the claims.

In the accompanying drawings, Figure 1 is afront elevation ofa flue boiler installation providedv with my` new 'and improved.

blow-out mechanism. Fig. 2, next above Fig. 1, is a plan view of Fig.1,'showing the front-portions of the boiler and my invention therewith. Fig. 3 is a side elevation .of

fects in that construction and to which eX- perience has demonstrated to be desirable and material, and is especially desirable for v marine boiler installations of the larger and more moderntype, in which there are the usual'boiler fines 2 and draft'ues 6 relatively in .front of and above the same and at right angles thereto as most rclearly shown" 'in Figs. 3 and 4. IIhe chiefimprovement herein lies in the combined mechanism adapted to blow out both sets of tubes simul-I taneously through the medium of afsingle steam supply pipe and a single simple hand operated mechanism.v

To these severalends I provide a single steam distributing pipe indicated by 4 and a plurality of vertically disposed branch pipes 3 at the front of boiler tubes 2 and provided with nipples 5 in position to come centrally opposite said tubes in any lateral movement of the said pipes 3 so that diierent vertical series of tubes may be successively cleansed as the pipes'are moved laterally over the same for this purpose. If the said tubes occupy a total width greater than the range of lateral adjustment of single pipes 3 I may employ two such pipes in successive positions as seen at both right and left in Fig. 3, and a relatively longer pipe 3 can be used as at the middle of said view if.

the tubes 2 occupy greater depth than width.

,It will not matter if one of the followerV pipes at right and left does traverse a portion of the area covered by the preceding pipe, and of course the adjustment or movement of sald pipes is only at intervals and of comparatively short duration when used as their work is exceedingly eective under the hlgh head of steam usually employed for thls purpose. All of the saidvertically dis- Patented July 25, 1916.

posed blow-out pipes 3 are supported by land in open communication with the steam supply and `distributing pipel 4. This latter pipe is located in the angle between the two sets of flues 2 and 6 and entirely out of the way of both'and so as not to be a possible obstruction to either set and where it can be utilized withfequal advantage for cleansing said flues. .Thel said pipe isslidable lengthwise or endwise within required limits in suitable guide bearings 7 here and there, and has a rack 8 iXedon its outer end which is engaged by 'an operating pinion 9 through h and Wheel 10 or othertsuitablemeans to elect the lengthwise o'r axial movement of the said pipe. f

Steam `is supplied from the stationary pipe 11 through the jointed pipe extension 12 to thepipel, and al valve having a stem 14 serves-to control the flow of steam to the pipe 11.r All the said vertical pipes 3 have rollers or 'casters 15 at their lower free ends which run on tracks 16 and' aiiord both an easy travel and means to confine the said pipes in uniform working position in respect to they lues 2. 0f course the back pressure of the steam whenblowing out occurs is very strong and the end supports of said pipes 4 must therefore be exceptionally firm to resist suchback pressure. It also should be such as .to permit Acomparatively easy hand control of the several parts constituting the com- ,l plete blow-out installation.

Now, having the distributing pipe 4 mounted in the angle or corner. of the two sets of iues 2 and 6, I affix one or Ino e branch pipes20 to or in said distributi g pipe at right angles to the pipes 3 and provide the same with jets or nipples 21 in line with the said lues 6. In the present construction the said pipes 20 arey shown in pairs so as to cover the said iiues in a single complete movement of the pipe 4, and each .pipe 20 is provided with a flanged wheel 22 running on a supporting track 23 at the outer and otherwise free end of said pipe.

n fuows that when the Steam distributing vpipe 4 is moved lengthwise or axially through its rack and pinion control both sets of blow-out pipes are moved in unison' `through pipe 4 and the tubes 2 and 6 are corners of dust. or other possible construc-` tions.

The angle between the bottom of the boiler front and the outer edge of the exhaust tubes 6 above is covered in by an inclined breeching or housing within which all the foregoing pipes are located, the space inclosed by the said breeching being part of the draftway or passage for the products of combustionl which dischargefrom the ues 2 and pass thence onward to the exit ilues 6.

What I claim is:

1. A blow-out installation for boilers comprising a breeching and vertically disposed flues at the top thereof, in combination with a steam distributing pipe slidably mounted in the angle of `said breeching and blow-out pipes at rightv angles to one andistributing pipe mounted to' slide length-- other carried by said pipe, and means at the free ends of said blow-out pipes adapted to sustain the same against lback pressure of the steam and to support the weight of said pipes. y

2. A lblow-out installation for 4boilers as described comprising a breeching `and, vertically disposed exhaust flues at the top thereof, in combination with a single steam wise in the angle of said breeching and provided .with operating means outside said breeching, blow-out pipesv disposed at right angles to eachother on said distributing pipe,l and means on the free ends of said blow-outpipes adapted' to carry the same and thereby relieve the weight on said:dis tributing pipe.

3. In a blow-out installation as described,

a breeching and exhaust lues at the top thereof, in combination with a steam dis to simultaneously. eject steam therefrom,l

guides inwhich said distributing pipe is slidablelengthwise and rollers carrying they ends of said branch pipes.

5. An installation as described having a breeching, a steam distributing pipe in the angle thereof adapted toy be moved in a direct line and fixed guides therefor and pro vided with operating means at one end, branch pipes on said distributing pipe at right angles to each other provided with nipples .and adapted to be moved .simultaneously, a roller on the end of each of said branch pipes and separatey tracksv for said sets of pipes yand rollers. y

6. The combination with a smoke bo'X and vertical rows of. tubes of different lengths connected thereto, of a cleaner-comprising a header longitudinally movable-in said smoke-box, and a plurality of laterally eX in length to thediflerent rows of tubes and provided with jet nozzlesforthe individual tubes of each row., I

In testimony whereof I afiX. my signature in presence of two witnesses.

DOUGLAS BREWS.

Witnesses: i r i R. B. MOSER,- F. J.v GREER. 

